Ahem.
Back in the 1990s Apple used to use proprietary components, internal connections and ports, which was one of the causes of Apple's march toward becoming an endangered species. Macs were expensive, and difficult to repair with expensive SCSI disks, weird Nubus and Comm Slot sockets (ATA and PCI later on, granted) and strange power supply connections.
When Steve came back, the propitiatory connections began to disappear, until you could use standard ATA disks, any standard CD drive, USB, etc. The earlier Intel Macs had the most numerous standard components, but it seems we're heading back the other way again in the strive to shave 0.0001" off each corner. Is it really worth having a computer that's a few percent thinner, that'll cost you hundreds to repair when the SSD wears out? Or if the RAM fails the whole logic board needs replacing? Don't tell me a proprietary SSD slot is necessary, the standard one worked just fine in the Air. Why is the battery glued into the base of the MBP? Surely double sided tape works just as well as it has done in the iPhone and iPad for the last few years. Is a hard disk with custom firmware in the iMac really required? Why do the fans go 747 when you put your own hard disk in?
I don't like the direction Apple is heading with the lack of standard components. History's shown the more proprietary they become, the more of an outsider they become, too.
This. I have been reading Walter Isaacson book and it is shocking to me how much Steve moved away from some of the crap Amelio and Sculley did. It's almost as if they never learned those lessons. (Or maybe Steve was the only one who did?)